I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
minnies meinies mines minis monies meanies minnows minas minus meanness munis mains miens manes mince moneys manias mannas menisci mannose muns mans mons menus hymns monos mensa mense manus means moons mincy monas manse manas moans muons manos mynas hymens menace mensae mynahs monoecy
bunnies minnies shannies johnnies gunnies ninnies tennies funnies nannies shinnies fannies sonnies pinnies whinnies tunnies hinnies jennies bennies pennies bennis phonies nenes nines keenness ennuis zinnias zanies beanies peonies tennis loonies leanness nones sanies townies pennis monies vainness lunies shinneys jinnis meanness toonies wienies meinies boonies heinies joannes pannes genies meanies bonnes goonies tonnes donnees conies ponies dunness denies weenies nonnews wanness sheenies bennes tawnies